Olfaction & Gustation - Kraatz Flashcards Preview

Neuro Exam 2 > Olfaction & Gustation - Kraatz > Flashcards

Flashcards in Olfaction & Gustation - Kraatz Deck (15):
1

What is the pathway of olfaction?

Odorants → primary receptor neurons → olfactory bulb → secondary neurons → pyriform cortex

2

What do Bowman's glands do?

Produce mucus layer

3

What are mitral cells?

Within glomeruli, receptor axons contact apical dendrites of mitral cells; cause odorant sensitivity

4

What are tufted cells?

Cells that receive synapses from primary afferent neurons and send signals along olfactory tract

5

What do granular cells do?

Contribute to lateral inhibition (no axons, just dendrites)

6

What is the pyriform cortex responsible for?

Odor discrimination

7

What is the amygdala responsible for?

Emotional and memory associations (including those related to odor)

8

What is the entorhinal cortex responsible for?

Odor memory and navigation

9

Are the stria (medial and lateral olfactory) responsible for containing afferent or efferent fibers?

Efferent

10

Where are fungiform papillae located?

Anterior 2/3 of tongue

11

Where are circumvallate papillae located?

Chevron at rear of tongue

12

Where are foliate papillae located?

Posterior lateral tongue

13

What nerves transmit primar special sensory afferent signals for the gustation system and to where do their fibers transmit?

CN VII Facial - geniculate ganglion
CN IX Glossopharyngeal - inferior ganglion (petrous)
CN X Vagus - inferior ganglion (nodose)

14

Where do secondary axons synapse after ascending along the gustatory nucleus?

VPM Thalamus

15

What type of innervation does CN V Trigeminal provide for the tongue?

General sensation on the anterior 2/3 of the tongue (NOT TASTE)